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1999 GMC Sierra 1500 SL 5.3L Poor Idle Quality, Surge, MIL Lamp on
Vehicle continues to set PO171 long term fuel trim lean. I cann't find a reason for this, all data paramiaters look ok. Code set when vehicle is cold just after it goes into closed loop. Vehicle run poorly when cold but I think this is being caused by the comp...
FIX posted 5/3/2002
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Message Closed
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Related Documents & Media | VIN | 1GTEK14T4X |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / Multe Port |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Surge, MIL Lamp On |
| Occurs | Cold, Idle |
| Misc. | 4 Whl. Dr. P/U |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
Message Closed
Vehicle Data
1999 GMC Sierra 1500 SL
| VIN | 1GTEK14T4X |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / Multe Port |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Surge, MIL Lamp On |
| Occurs | Cold, Idle |
| Misc. | 4 Whl. Dr. P/U |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
Video